package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
         /*进行md5加密，然后再进行比对*/

        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
    * 新增员工
    * */
    @Override
    public void addEmployee(EmployeeDTO dto) {
//1.补全缺失数值
        Employee employee=new Employee();

        BeanUtils.copyProperties(dto,employee);
//        补全密码默认123456，并采用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex((PasswordConstant.DEFAULT_PASSWORD.getBytes())));

        employee.setStatus(StatusConstant.ENABLE);


//        2.调用mapper层方法
        employeeMapper.insert(employee);




    }

    @Override
    public PageResult page(EmployeePageQueryDTO dto) {
        PageHelper.startPage(dto.getPage(),dto.getPageSize());

        Page<Employee> p=employeeMapper.page(dto);


        return new PageResult(p.getTotal(),p.getResult());



    }
    /*
     * 启用、禁用员工账号
     * */

    @Override
    public void startOrStop(Integer status, Long id) {

        Employee employee=Employee.builder()
                .status(status)
                .id(id)

                .build();

        employeeMapper.startOrStop(employee);


    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);

    }

    @Override
    public void updateEmployee(EmployeeDTO dto) {
        Employee employee=Employee.builder()

                .build();
        BeanUtils.copyProperties(dto,employee);
        employeeMapper.startOrStop(employee);

    }

}
